<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <!-- 题目4: 写一个函数 parseQueryString，它的用途是把 URL 参数解析为一个对象
函数名：parseQueryString
参数：URL字符串
返回值：URL字符串解析后的对象
例如：parseQueryString("admin=user&pass=1234") 返回 {admin:"user",pass:"1234"} -->
</body>

</html>
<script>
    function parseQueryString(url) {
        let index = url.indexOf("?")
        let str = url.slice(index + 1)
        let arr = str.split("&")
        return arr
        let obj = {};
        for (let i = 0; i < arr.length; i++) {
            // return arr[i]
            let arr1 = arr[i].split('=');
            obj[arr1[0]] = arr1[1]
            return obj
        }
    }
    console.log(parseQueryString("admin=user&pass=1234")); 
</script>